(codepipeline_actions): CodeDeployEcsDeployAction doesn't return the role created by default

What is the problem?

If you create a CodeDeployEcsDeployAction and don’t pass a role as a parameter, the codepipeline will generate a default one for you (as seen in pipeline.ts). However this role cannot be retrieved from the CodeDeployEcsDeployAction object.

Reproduction Steps

    const deploymentGroup = codedeploy.EcsDeploymentGroup.fromEcsDeploymentGroupAttributes(stack, "DeploymentGroup", {
      application: EcsApplication.fromEcsApplicationName(stack, "ECSApplication", "test"),
      deploymentGroupName: "test",
    });

    const action = new codepipeline_actions.CodeDeployEcsDeployAction({
      actionName: "Deploy",
      deploymentGroup: deploymentGroup,
      taskDefinitionTemplateInput: new codepipeline.Artifact("dummy"),
      appSpecTemplateInput: new codepipeline.Artifact("dummy2"),
    });

    const pipeline = new codepipeline.Pipeline(stack, "Pipeline", {
      stages: [
        {
          stageName: "DeployECS",
          actions: [action],
        },
      ],
    });

    const actionRole = action.actionProperties.role;
    // actionRole is always undefined
    console.log(actionRole);

What did you expect to happen?

action.actionProperties.role returns the default role created by codepipeline.

What actually happened?

action.actionProperties.role is undefined.

CDK CLI Version

1.129.0

Framework Version

No response

Node.js Version

14.18.1

OS

Amazon Linux 2

Language

Typescript

Language Version

No response

Other information

No response

[angarg12]

Sure, I’m busy at the moment but I would be able to take this by the end of the month.

[angarg12]

That works.

I (incorrectly) assumed that fromEcsDeploymentGroupAttributes would point to the existing Deployment Group in the account, which has the correct DeploymentConfig. Now it works as expected.